將矩形的一側做成波浪形

Question

以下是 MWE，用於在頁面左側放置一個黑色矩形，以隱藏印表機在每張紙上留下的黑色標記（？舊墨盒）。

如何使矩形的開口側呈波浪形或絲帶狀，使其看起來具有裝飾性？

\documentclass[a5paper]{article}

\usepackage{tikzpagenodes}
\usetikzlibrary{calc}

\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
    \fill[black] (current page.north west) --
                 ($(current page.north west) +(5mm,0)$) --
                 ($(current page.south west) +(5mm,0)$) --
                 (current page.south west);
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text\newpage

\section{Another section}
Some text

\end{document} 

Answer 1

tape使用以下形狀的另一種選擇shapes.symbols：

\documentclass[a5paper]{article}
\usepackage{tikz}
\usetikzlibrary{shapes.symbols}

\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
\node[
  tape,
  fill=black,
  minimum height=2cm,%\paperheight,
  minimum width=\paperheight,
  rotate=90]
 at (current page.west) 
{};
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text\newpage

\section{Another section}
Some text

\end{document} 

改變tape bend height，你可以產生一些更「波浪形」的東西：

\documentclass[a5paper]{article}
\usepackage{tikz}
\usetikzlibrary{shapes.symbols}

\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
\node[
  tape,
  fill=black,
  minimum height=2cm,
  minimum width=\paperheight,
  tape bend height=20pt,
  rotate=90]
 at (current page.west) 
{};
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text\newpage

\section{Another section}
Some text

\end{document} 

並有coil裝飾：

\documentclass[a5paper]{article}
\usepackage{tikz}
\usetikzlibrary{decorations.pathmorphing}
\usepackage{eso-pic}

\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
  \fill[black, decorate, decoration={coil,segment length=30pt}] 
    (current page.north west) -- 
    ([xshift=8mm,yshift=5mm]current page.north west) --
    ([xshift=8mm,yshift=-5mm]current page.south west) --
    (current page.south west);
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text.
\newpage

\section{Another section}
Some text.

\end{document}

同樣，使用裝飾屬性可以獲得不同的效果：

\documentclass[a5paper]{article}
\usepackage{tikz}
\usetikzlibrary{decorations.pathmorphing}
\usepackage{eso-pic}

\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
  \fill[black, decorate, decoration={coil,segment length=90pt,aspect=0}] 
    (current page.north west) -- 
    ([xshift=8mm,yshift=5cm]current page.north west) --
    ([xshift=8mm,yshift=-5cm]current page.south west) --
    (current page.south west);
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text.
\newpage

\section{Another section}
Some text.

\end{document}

作為馬克·維布羅已建議在他的評論，如果矩形始終位於左側，則可以透過僅裝飾矩形的右側來提高速度；例如：

\documentclass[a5paper]{article}
\usepackage{tikz}
\usetikzlibrary{decorations.pathmorphing}
\usepackage{eso-pic}

\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
  \fill[black, decoration={coil,segment length=90pt,aspect=0}] 
    (current page.north west) -- 
    ([xshift=8mm,yshift=5cm]current page.north west) 
    decorate { --
    ([xshift=8mm,yshift=-5cm]current page.south west) } --
    (current page.south west);
\end{tikzpicture}%
}

\begin{document}

\section{A section}
Some text.
\newpage

\section{Another section}
Some text.

\end{document}

請注意，為此您實際上並不需要該tikznodepages套件，因為使用的節點已由標準 TikZ 定義。此外，人們還可以不必使用calc圖書館。

更新：

我看到在你原來的問題您決定改用background套餐；在這種情況下，要翻譯上面的範例程式碼，您所需要做的就是將環境放置tikzpicture為contents鍵的值，如以下範例所示（不需要額外的方塊或另一個額外的內容，tikzpicture如接受的答案中所示）其他問題；calc圖書館也不是必需的）：

\documentclass[a5paper]{article}
\usepackage{background}
\usetikzlibrary{shapes.symbols}

\backgroundsetup{
angle=0,
scale=1,
opacity=1,
color=black,
contents={
  \begin{tikzpicture}[remember picture, overlay]
  \node[
  tape,
  fill=black,
  minimum height=2cm,%\paperheight,
  minimum width=\paperheight,
  rotate=90]
 at (current page.west) 
  {};
  \end{tikzpicture}%
  }
}
\begin{document}

Some text

\end{document}

Answer 2

我使用了 TikZ 及其decorations.pathmorphing庫。我將矩形製作得比上面高，\paperheight以確保裝飾覆蓋了我們需要的整個區域。

\documentclass[a5paper]{article}
\usepackage{tikzpagenodes}
\usetikzlibrary{calc}
\usetikzlibrary{decorations.pathmorphing}
\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\begin{tikzpicture}[remember picture, overlay]
  \fill[black, decorate, decoration=snake] 
    (current page.north west) -- 
    ($(current page.north west) +(5mm,5mm)$) --
    ($(current page.south west) +(5mm,-5mm)$) --
    (current page.south west);
\end{tikzpicture}}% End of \AddToShipoutPictureBG
\begin{document}
\section{A section}Some text.\newpage
\section{Another section}Some text.
\end{document}